libam7xxx  0.1
Communication library for Actions Micro AM7XXX based USB projectors and DPFs
tools.c
1 /* am7xxx - communication with AM7xxx based USB Pico Projectors and DPFs
2  *
3  * Copyright (C) 2014-2018 Antonio Ospite <ao2@ao2.it>
4  *
5  * This program is free software: you can redistribute it and/or modify
6  * it under the terms of the GNU General Public License as published by
7  * the Free Software Foundation, either version 2 of the License, or
8  * (at your option) any later version.
9  *
10  * This program is distributed in the hope that it will be useful,
11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13  * GNU General Public License for more details.
14  *
15  * You should have received a copy of the GNU General Public License
16  * along with this program. If not, see <http://www.gnu.org/licenses/>.
17  */
18 
19 #ifdef _WIN32
20 #include <windows.h>
21 #else
22 #include <errno.h>
23 #include <time.h>
24 #endif
25 
26 #include "tools.h"
27 
35 int msleep(unsigned long msecs)
36 {
37 #ifdef _WIN32
38  Sleep(msecs);
39 #else
40  struct timespec delay;
41  int ret;
42 
43  delay.tv_sec = msecs / 1000;
44  delay.tv_nsec = (msecs % 1000) * 1000000;
45  while (1) {
46  ret = nanosleep(&delay, &delay);
47  if (ret == -1 && errno == EINTR)
48  continue;
49  break;
50  }
51  if (ret == -1)
52  return ret;
53 #endif
54 
55  return 0;
56 }